Choose the best answer: 

She_______ him when he called her.

Choose the letter A, B, C or D to complete the sentences:
When this _________ , our cities and beautiful landscapes will face pollution, poisoning and many health problems.

Choose the correct answer  A, B, C or D into complete the following sentence. " This picture __________ the contamination of ground water."

Choose best correct to complete the sentence.  We are looking __________ a type of cup recycled from grains

Choose the correct answer  A, B, C or D into complete the following sentence. "Have you ever heard about the __________ of radioactive pollution?"

Choose the letter (A, B, C, or D) as the best answer to complete the following sentences.

It was ________that I left before the end.

Choose the correct answer  A, B, C or D into complete the following sentence. "What would you do if a factory in your neighborhood __________ untreated water into the river?"

Choose the best answer: 

The superintendent promised to tear down and_______ the fire-damaged school building.

fill each of the following sentences with an appropriate preposition.

mr lam arrived………..ha noi…………..two o’clock

Choose the letter (A, B, C, or D) as the best answer to complete the following sentences.

She often uses her goods as _______ as she can.

Choose the best answer

After a month, Hoa got used to ………………. in her new school.

Choose the letter (A, B, C, or D) as the best answer to complete the following sentences.

There is one television program which is above all _____________in popularity.

Choose the letter A, B, C or D to complete the sentences:
It conserves natural resources such _________ water, minerals, coal, oil, gas and timber. 

Choose the best answer: 

The mechanic needs_______ a new muffler on your car.

Choose the best answer: 

The old lamp________in china is 5 dollars.

Choose best correct to complete the sentence. You_____ yourself ill if you don't eat properly

Choose the letter A, B, C or D to complete the sentences: My dad turned off the lights before going out _____ waste electricity.

Choose the best answer: 

Sam always remembers_______ in the garage so that the driveway is free for other cars.

Choose the best answer: 

_______ to friends is nice but_______ is also enjoyable

Choose the best answer: 

Try_______ so many mistakes.